HP HP-67 - Page 39

Getting Started 35
You work through the problem exactly the same way with the HP-67,
one operation at a time. You solve for the intermediate result first...
(12 +3)
Press Display
12
12.00
3 .
Intermediate result.
...and then solve for the final answer. You don’t need to press
to store the intermediate result—the HP-67 automatically
stores it inside the calculator when you key in the next number. To
continue...
Press Display
7 The intermediate result
from the preceding opera-
tion is automatically
stored inside the calcu-
lator when you key in
this number.
a8 Pressing the function key
multiplies the new num-
ber and the intermediate
result, giving you the
final answer.
Now try these problems. Notice that for each problem you only have
to press to insert a pair of numbers into the calculator—each
subsequent operation is performed using a new number and an auto-
matically stored intermediate result.
To solve Press Display
2 +3)
10 2
3
10